What is lycra

Last updated: April 1, 2026

Quick Answer: Lycra is a synthetic elastic fiber, also known as spandex or elastane, that provides stretch and recovery to clothing. It's widely used in sportswear, swimwear, and fitted garments for comfort and flexibility.

Key Facts

Definition and Names

Lycra is a synthetic elastomeric fiber that provides exceptional stretch and recovery properties. Trademarked by DuPont, it's commonly referred to as spandex in North America and elastane in Europe. The name "Lycra" comes from an anagram of "lycurex."

History and Development

Lycra was invented in 1958 by DuPont chemist Joseph Shivers. It revolutionized the textile industry by providing a durable, long-lasting elastic fiber that could replace rubber and other elastic materials in clothing. The innovation became especially important for swimwear, dance wear, and athletic clothing.

Chemical Composition and Properties

Lycra is a polyurethane-based polymer classified as an elastomer. Its unique properties include:

Applications and Uses

Lycra is rarely used in pure form; instead, it's blended with other fibers in small percentages (typically 5-20%). Common applications include:

Care and Maintenance

Proper care extends Lycra garment longevity. Wash in cool to lukewarm water with gentle detergent, avoid high heat, and air dry rather than machine drying. Excessive heat damages the elastic properties, reducing stretch and recovery over time.

Environmental Considerations

While Lycra offers durability reducing replacement frequency, it's a petroleum-based synthetic fiber. Modern developments focus on sustainable alternatives and recycled elastane to reduce environmental impact.

Related Questions

What's the difference between Lycra and spandex?

Lycra is a brand name (by DuPont) while spandex is the generic term in North America. Elastane is the European term. All refer to the same type of synthetic elastic fiber with identical properties.

How do you wash Lycra clothing?

Wash Lycra garments in cool water with gentle detergent, avoid bleach and fabric softeners, and air dry. High heat damages the elastic fibers, so never use hot water or machine dry Lycra clothing.

What percentage of Lycra is used in clothing?

Lycra typically comprises 5-20% of fabric blends in most garments. Higher percentages provide greater stretch for competitive swimwear or specialized activewear, while lower percentages work for fitted casual clothing.

Sources

  1. Wikipedia - Spandex (Lycra/Elastane) CC-BY-SA-4.0
  2. DuPont - Lycra Brand Information Corporate